Map of Officer South, VIC 3809

Officer is a satellite suburb of Melbourne, Victoria, Australia, 54 km south-east of Melbourne's Central Business District, located within the Shire of Cardinia local government area. Officer recorded a population of 7,133 at the 2016 Census.

Officer serves as the Council seat of the shire. The suburb is currently under major residential development, with the population number likely to be exponentially higher today.